The C7 Z06 revealed.
01-12-2014, 05:26 PM
#321
Drifting
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IMO, the cash register will rule when it comes to transmissions in the Vett, not the auto writter's reviews nor comments on the web. Whatever makes the cash register ring will be the determining factor. As an example, some time ago, Porsche tried to eliminate the 911 by introducing the 928 line of vehicles. The buyers, espically California buyers who at that time ruled the Porsche market, said no with their pocket books. They kept buying the 911 types and not the 928s. On the other side of the coin, the SUVs by Porsche were accepted as well as the sedans and are still in production and contribute very nicely to the Porsche profit.
01-12-2014, 06:23 PM
#322
Safety Car
Imo the 8 speed auto will pave the way for a future DCT. The future DCT will be used to sell the refresh, or an upgraded model similar to a zr1 or even may not surface until the c8.
Z06 is overkill as it is. It won't be criticized for lack of DCT or performance at all. GM can keep that Ace in the hole.
Z06 is overkill as it is. It won't be criticized for lack of DCT or performance at all. GM can keep that Ace in the hole.
01-12-2014, 06:37 PM
#323
16 Vettes and counting…..
Imo the 8 speed auto will pave the way for a future DCT. The future DCT will be used to sell the refresh, or an upgraded model similar to a zr1 or even may not surface until the c8.
Z06 is overkill as it is. It won't be criticized for lack of DCT or performance at all. GM can keep that Ace in the hole.
Z06 is overkill as it is. It won't be criticized for lack of DCT or performance at all. GM can keep that Ace in the hole.
And I'll wager right now that they sell more Z06's with the auto than the manual.
01-12-2014, 07:02 PM
#325
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Yup, and one of them will be mine.
01-12-2014, 07:09 PM
#327
Safety Car
01-12-2014, 09:04 PM
#328
Imo the 8 speed auto will pave the way for a future DCT. The future DCT will be used to sell the refresh, or an upgraded model similar to a zr1 or even may not surface until the c8.
Z06 is overkill as it is. It won't be criticized for lack of DCT or performance at all. GM can keep that Ace in the hole.
Z06 is overkill as it is. It won't be criticized for lack of DCT or performance at all. GM can keep that Ace in the hole.
"Slushboxes" are from the '50s when they had fluid couplers. Those were replaced by torque converters in the '60s, lockup torque converters in the '70s, pulse width modulated (PWM) lockup torque converters in the '90s, and the 2000s brought us multi-disc PWM lockup torque converters capable of transmitting the maximum power of high performance engines in lockup mode. The 6L80 torque converter goes into lockup in 2nd gear and I'm sure the 8L90 will too. The PWM feature "pulses" the lockup clutch hydraulic pressure to achieve as much as 80-100 RPM "slippage" between the input/output of the torque converter at low RPM cruise to dampen engine vibrations due to low frequency power pulses from individual piston power strokes. The modern day torque converter has nothing in common with the old "slushbox" fluid coupler...welcome to the 21st century.
A DCT has two multi plate wet clutches that are hydraulically applied/released in a clutch to clutch architecture. The 8L90 has multiple multi plate wet clutches that are hydraulically applied/released in a clutch to clutch architecture. The same exact thing just different. There is no reason the 8L90 can't shift as fast as a DCT...they both use multi plate wet clutches and a hydraulic pump in conjunction with proportional "solenoid" valves that control the speed of the clutch engagement/shift.
I like the term "torque converter MCT" for the 8L90...it has more than two clutches so DCT wouldn't be proper. Plus, more is better.
Any standing start contest will be won handily by the 8L90 with the torque converter multiplying torque and letting the engine get up on top of its HP curve faster. They weigh about the same and efficiency will be about the same but the 8L90 will be smaller. The 8L90 will kick any DCT to the curb when it comes to drivability and you don't have to worry about the computer second guessing what you want to do. You also don't have to worry about being in the wrong gear all of a sudden since the DCT can only pre-select one gear...all gears are engaged all of the time in the 8L90.
I think if people took the time to understand 21st century automatics, we wouldn't have so many naysayers. Hopefully there will be plenty of info at the reveal but it's the proverbial "you can lead a horse to water" all over again...you can't drown them because they breathe through their butt.
A DCT has two multi plate wet clutches that are hydraulically applied/released in a clutch to clutch architecture. The 8L90 has multiple multi plate wet clutches that are hydraulically applied/released in a clutch to clutch architecture. The same exact thing just different. There is no reason the 8L90 can't shift as fast as a DCT...they both use multi plate wet clutches and a hydraulic pump in conjunction with proportional "solenoid" valves that control the speed of the clutch engagement/shift.
I like the term "torque converter MCT" for the 8L90...it has more than two clutches so DCT wouldn't be proper. Plus, more is better.
Any standing start contest will be won handily by the 8L90 with the torque converter multiplying torque and letting the engine get up on top of its HP curve faster. They weigh about the same and efficiency will be about the same but the 8L90 will be smaller. The 8L90 will kick any DCT to the curb when it comes to drivability and you don't have to worry about the computer second guessing what you want to do. You also don't have to worry about being in the wrong gear all of a sudden since the DCT can only pre-select one gear...all gears are engaged all of the time in the 8L90.
I think if people took the time to understand 21st century automatics, we wouldn't have so many naysayers. Hopefully there will be plenty of info at the reveal but it's the proverbial "you can lead a horse to water" all over again...you can't drown them because they breathe through their butt.
The new "base" Brembos on the C7 are extremely solid (no more silly slide rail calipers or padletts) and the carbon brakes are on par with the best of anything out there.
01-12-2014, 10:01 PM
#330
That sounds ridiculous....
I'm ordering one of these AS SOON AS AVAILABLE because of the auto option!
Sold my zr1 due to not caring for the manual...
Glad GM did the right thing!!!,
Last edited by jason427; 01-12-2014 at 10:04 PM.
01-12-2014, 10:47 PM
#331
Race Director
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01-12-2014, 11:22 PM
#332
Safety Car
I don't think so... I think the newest generation of converter-based autos will overtake DCT technology.
The wheel bearings were taken care of with the development of the C6ZR1. The SKF race bearings which became standard are very robust. I haven't worn one out after 3 years with my C5 race car. Also, they designed new spindles with the ZR1 which can be retrofitted all the way back to C5s (I have them on my car).
The new "base" Brembos on the C7 are extremely solid (no more silly slide rail calipers or padletts) and the carbon brakes are on par with the best of anything out there.
The wheel bearings were taken care of with the development of the C6ZR1. The SKF race bearings which became standard are very robust. I haven't worn one out after 3 years with my C5 race car. Also, they designed new spindles with the ZR1 which can be retrofitted all the way back to C5s (I have them on my car).
The new "base" Brembos on the C7 are extremely solid (no more silly slide rail calipers or padletts) and the carbon brakes are on par with the best of anything out there.
DCT is not only efficient at shift speeds, but power loss and fuel efficiency also improve over torque converted auto's. Auto's are not on the same level, nor do they carry the same amount of hype. Based on this evidence, I stand by my statement.
I'll be glad if the hubs are better.
01-13-2014, 06:23 AM
#333
Holy **** this is nice...I suspect it will start at about 90k. Too rich for me (for a car)...I'm out. Hopefully it will depreciate quickly like most other vettes so I can have one in the future 
01-13-2014, 07:56 AM
#334
01-13-2014, 03:54 PM
#338
Safety Car
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2022 C2 of the Year Finalist - Modified
C2 of the Year Finalist - Modified 2020
I would think this is great news considering what the Z07 package offers!
